1/* linux/include/asm-arm/arch-msm/msm_smd.h 2 * 3 * Copyright (C) 2007 Google, Inc. 4 * Author: Brian Swetland <swetland@google.com> 5 * 6 * This software is licensed under the terms of the GNU General Public 7 * License version 2, as published by the Free Software Foundation, and 8 * may be copied, distributed, and modified under those terms. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 */ 16 17#ifndef __ASM_ARCH_MSM_SMD_H 18#define __ASM_ARCH_MSM_SMD_H 19 20typedef struct smd_channel smd_channel_t; 21 22/* warning: notify() may be called before open returns */ 23int smd_open(const char *name, smd_channel_t **ch, void *priv, 24 void (*notify)(void *priv, unsigned event)); 25 26#define SMD_EVENT_DATA 1 27#define SMD_EVENT_OPEN 2 28#define SMD_EVENT_CLOSE 3 29 30int smd_close(smd_channel_t *ch); 31 32/* passing a null pointer for data reads and discards */ 33int smd_read(smd_channel_t *ch, void *data, int len); 34 35/* Write to stream channels may do a partial write and return 36** the length actually written. 37** Write to packet channels will never do a partial write -- 38** it will return the requested length written or an error. 39*/ 40int smd_write(smd_channel_t *ch, const void *data, int len); 41 42int smd_write_avail(smd_channel_t *ch); 43int smd_read_avail(smd_channel_t *ch); 44 45/* Returns the total size of the current packet being read. 46** Returns 0 if no packets available or a stream channel. 47*/ 48int smd_cur_packet_size(smd_channel_t *ch); 49 50/* used for tty unthrottling and the like -- causes the notify() 51** callback to be called from the same lock context as is used 52** when it is called from channel updates 53*/ 54void smd_kick(smd_channel_t *ch); 55 56 57 58typedef enum 59{ 60 SMD_PORT_DS = 0, 61 SMD_PORT_DIAG, 62 SMD_PORT_RPC_CALL, 63 SMD_PORT_RPC_REPLY, 64 SMD_PORT_BT, 65 SMD_PORT_CONTROL, 66 SMD_PORT_MEMCPY_SPARE1, 67 SMD_PORT_DATA1, 68 SMD_PORT_DATA2, 69 SMD_PORT_DATA3, 70 SMD_PORT_DATA4, 71 SMD_PORT_DATA5, 72 SMD_PORT_DATA6, 73 SMD_PORT_DATA7, 74 SMD_PORT_DATA8, 75 SMD_PORT_DATA9, 76 SMD_PORT_DATA10, 77 SMD_PORT_DATA11, 78 SMD_PORT_DATA12, 79 SMD_PORT_DATA13, 80 SMD_PORT_DATA14, 81 SMD_PORT_DATA15, 82 SMD_PORT_DATA16, 83 SMD_PORT_DATA17, 84 SMD_PORT_DATA18, 85 SMD_PORT_DATA19, 86 SMD_PORT_DATA20, 87 SMD_PORT_GPS_NMEA, 88 SMD_PORT_BRIDGE_1, 89 SMD_PORT_BRIDGE_2, 90 SMD_PORT_BRIDGE_3, 91 SMD_PORT_BRIDGE_4, 92 SMD_PORT_BRIDGE_5, 93 SMD_PORT_LOOPBACK, 94 SMD_PORT_CS_APPS_MODEM, 95 SMD_PORT_CS_APPS_DSP, 96 SMD_PORT_CS_MODEM_DSP, 97 SMD_NUM_PORTS, 98} smd_port_id_type; 99 100#endif 101